Project Name: Train Map
Details: It may be in German, but this is one of the coolest real-time mashups yet. This map shows you where all the trains run by Swiss Federal Railways are in real time. You can even watch the trains as they move across the map into and out of stations across the country. If you're planning a trip to Switzerland any time soon, check out this map.
Image: [[xref:http://www.photochart.com/photo_7117_Swiss%20Train%202.html|PhotoChart user Rhyfall]]